W = 7/15 L
w = 56
56 = 7/15 L
56 x 15/7 = 7/15 x7 L
L = 120
Answer:
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Step-by-step explanation:
the geometric mean is 20
the geometric mean of 2 numbers a and b is 
=
= 20
Step-by-step explanation:
the answer is obtuse triangle
Answer:
x
= −
4
±
√
21
Step-by-step explanation: